Hi MilissaAnn,
I doubt that the issue is as bad as you might be imagining it is. The closer that you are right now to the very dramatic experience of transition, the more prevalent is the experience of being overly critical of one's self image. I think that in time you will find that this feeling you're having is actually the natural process of transition itself. What I mean is that during the process of transitioning, and for years afterward, we are constantly on alert for any gender markers that might give us away as trans women. It's actually a perfectly natural part of transitioning to seek out those markers that we wish to shed so that we can take the necessary steps of changing/modifying them. In time (and the process will take years in most cases) as the event of transition itself becomes a distant memory, I think that most people begin to relax into the certainty of the gender they have grown into.
I believe that if we as trans women can simply accept the self critical perspective as being a natural part of the process and not get too caught up in the uncomfortable elements of it, we can relax into the process of fine tuning our newly acquired gender presentation and maybe even enjoy the process as we grow and evolve.
Never fear. Self acceptance is almost certain to bloom within as you grow into womanhood. Relax and enjoy the fruits of your labor as much as you can. The best is yet to come.